Accession Number:

ADA455957

Title:

Optimal Controller for Turbulent Flow Over an Airfoil

Descriptive Note:

Final rept., 1 Jan 2003-31 Dec 2005

Corporate Author:

CALIFORNIA UNIV REGENTS LOS ANGELES

Personal Author(s):

Report Date:

2006-05-17

Pagination or Media Count:

108.0

Abstract:

The objectives of this project are twofold to develop a detached-eddy simulation DES technique for turbulent flows past an airfoil at a high angle of attack, and to explore new control strategies for the separated flow, utilizing modern control theories. A system identification approach is used to construct an approximate linear system model for complex flows. The linear quadratic Gaussian LQG control synthesis is then used to design optimal controllers for the identified linear model. A system-identification-LQG approach is applied to control a separated boundary layer flow on a flat plate. The controller design based on the identified linear model is shown to reduce the time-averaged separation bubble size.

Subject Categories:

  • Flight Control and Instrumentation
  • Fluid Mechanics
  • Aerodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE